Behold, Roy Lewallen signalled from keyed 4-1000A filament:

Some spam-blocking services give the option to block all incoming email
from certain countries, such as China, Korea, several African countries,
and, I'm sorry to say, Brazil. I presume these choices are available
because of the relatively large amount of spam compared to the small
amount of legitimate email originating in those countries. (A noticeable
fraction of the 200+ spam messages I get each day originate in Brazil,
but very little legitimate email does.) But I don't know what purpose
would be served by preventing a web site from being accessed by people
in those countries, unless it's concern about a denial-of-service attack
by a virus or worm being sent from there.

Roy Lewallen, W7EL

Heh, I eliminated all but one or so spam a month by blocking everything
from *.cn, *.kr and the entire AOL netblock assignment ;-)

--
Gregg t3h g33k
"Ratings are for transistors....tubes have guidelines"
http://geek.scorpiorising.ca